Used in peptide synthesis as a protected amino acid building block, particularly in solid-phase peptide synthesis (SPPS). The FMoc group provides temporary N-terminal protection that is easily removed under mild basic conditions, allowing stepwise assembly of peptides. The dmb (2,4-dimethoxybenzyl) side chain protection offers stability during repetitive deprotection cycles and can be selectively removed under acidic conditions. This dual protection strategy is valuable for synthesizing complex peptides with high purity and reduced side reactions. Commonly applied in research settings for developing peptide-based drugs, probes, and biomaterials.